Method of intersection identification for collision warning system

A method of operating a motor vehicle with a driver, comprising the steps of:

• receiving intersection information;
• determining a vehicle speed;
• determining at least one potential intersection;
• determining whether the driver intends to turn the motor vehicle to the left;
• determining a distance from the motor vehicle to the at least one potential intersection;
• retrieving a threshold speed and a threshold distance;
• setting the potential intersection as an identified intersection when the driver has slowed the vehicle speed to below the threshold speed and when the distance is below the threshold distance;
• and
• controlling a collision warning system of the motor vehicle according to the identified intersection
• wherein the step of controlling the collision warning system includes steps of receiving information from a remote vehicle, determining if the remote vehicle is close to the identified intersection, and estimating a collision point for the motor vehicle and the remote vehicle based upon the information received from the remote vehicle.

A method of operating a motor vehicle, comprising the steps of:

• receiving intersection information;
• determining a vehicle speed;
• determining at least one potential intersection;
• determining a distance from the motor vehicle to the at least one potential intersection;
• retrieving a threshold speed and a threshold distance;
• setting the potential intersection as an identified intersection when the vehicle speed is below the threshold speed and when the distance is below the threshold distance;
• and
• controlling a collision warning system of the motor vehicle according to the identified intersection;
• wherein the step of controlling the collision warning system further comprises steps of:
• determining a next intersection from the set of potential intersections, the next intersection being further in front of the motor vehicle than the identified intersection;
• determining if there is a stopped leading vehicle at the next intersection;
• if there is a stopped leading vehicle at the next intersection, determining that the chance for a collision with a remote vehicle is low and controlling a collision warning system of the motor vehicle in a normal alert mode providing normal alert information to a driver of the motor vehicle;
• if there is not a stopped leading vehicle at the next intersection, determining that the chance for a collision requires controlling the collision warning system in an enhanced alert mode providing enhanced alert information to the driver of the motor vehicle;
• wherein the enhanced alert mode is different than the normal alert mode.

A method of operating a motor vehicle, comprising the steps of:

• receiving intersection information;
• determining an identified intersection and a next intersection from a set of potential intersections, the next intersection being further in front of the motor vehicle than the identified intersection;
• determining if there is a stopped leading vehicle at the next intersection;
• determining whether a driver of the motor vehicle intends to turn the motor vehicle;
• determining whether a vehicle speed of the motor vehicle has slowed to below a threshold speed;
• determining whether there is a stopped vehicle at the next intersection;
• if there is a stopped vehicle at the next intersection, determining that the chance for a collision with a remote vehicle is low and controlling a collision warning system of the motor vehicle in a normal alert mode;
• and
• if there is not a stopped vehicle at the next intersection, determining that the chance of a collision requires controlling the collision warning system in an enhanced alert mode when there is not a stopped leading vehicle at the next intersection;
• wherein the enhanced alert mode is different than the normal alert mode.